Liquid crystal display device

Abstract

The present invention provides a liquid crystal display device, which includes a backlight module, a mold frame mounted on the backlight module, a liquid crystal display panel mounted on the mold frame, and a bezel mounted on the liquid crystal display panel. The backlight module includes a backplane, a light bar mounted to the backplane, a graphite pad arranged between the backplane and the light bar. The light bar includes a metal core printed circuit board that is set in the form of an inverted U-shape and a plurality of LED lights mounted to and electrically connected with the metal core printed circuit board. The metal core printed circuit board is mounted to the backplane so as to mount the light bar to the backplane.

What is claimed is: 
     
       1. A liquid crystal display device, comprising a backlight module, a mold frame mounted on the backlight module, a liquid crystal display panel mounted on the mold frame, and a bezel mounted on the liquid crystal display panel, the backlight module comprising a backplane, a light bar mounted to the backplane, a graphite pad arranged between the backplane and the light bar, the light bar comprising a metal core printed circuit board that is set in the form of an inverted U-shape and a plurality of light emitting diode (LED) lights mounted to and electrically connected with the metal core printed circuit board, the metal core printed circuit board being mounted to the backplane so as to mount the light bar to the backplane;
 wherein the metal core printed circuit board comprises first and second sidewalls that are arranged to oppose each other and a third sidewall connected between the first and second sidewalls, the first sidewall and the second sidewall being arranged parallel to each other, the third sidewall being perpendicularly connected to the first and second sidewalls, the first, second, and third sidewalls surrounding and delimiting a U-shaped channel, the LED lights being mounted to and electrically connected to an outer surface of the first sidewall of the metal core printed circuit board. 
 
     
     
       2. The liquid crystal display device as claimed in  claim 1 , wherein the graphite pad is attached to an inner surface of the first sidewall of the metal core printed circuit board. 
     
     
       3. The liquid crystal display device as claimed in  claim 1 , wherein the graphite pad is arranged in a U-shaped configuration corresponding to the U-shaped channel and is set in the U-shaped channel. 
     
     
       4. The liquid crystal display device as claimed in  claim 1 , wherein the backplane comprises a bottom board and a side board connected to the bottom board, the side board and the bottom board defining a receiving space. 
     
     
       5. The liquid crystal display device as claimed in  claim 4 , wherein the metal core printed circuit board is fit over and retained by the side board of the backplane with the U-shaped channel thereof. 
     
     
       6. The liquid crystal display device as claimed in  claim 4 , wherein the backlight module further comprises a reflector plate received in the receiving space, a light guide plate mounted on the reflector plate, and an optic component arranged on the light guide plate, the reflector plate being arranged on the bottom board of the backplane. 
     
     
       7. The liquid crystal display device as claimed in  claim 1 , wherein the mold frame forms a receiving section corresponding to the liquid crystal display panel, the liquid crystal display panel being received in the receiving section. 
     
     
       8. The liquid crystal display device as claimed in  claim 1 , wherein the liquid crystal display panel comprises a thin film transistor (TFT) substrate, and color filter (CF) substrate laminated to the TFT substrate, liquid crystal interposed between the TFT substrate and the CF substrate, a first polarizer laminated to a surface of the TFT substrate away from the CF substrate, and a second polarizer laminated to a surface of the CF substrate away from the TFT substrate. 
     
     
       9. The liquid crystal display device as claimed in  claim 8 , wherein the liquid crystal display panel further comprises a sealant resin frame arranged along circumferential edges of the CF substrate and spacers arranged inboard the sealant resin frame. 
     
     
       10. A liquid crystal display device, comprising a backlight module, a mold frame mounted on the backlight module, a liquid crystal display panel mounted on the mold frame, and a bezel mounted on the liquid crystal display panel, the backlight module comprising a backplane, a light bar mounted to the backplane, a graphite pad arranged between the backplane and the light bar, the light bar comprising a metal core printed circuit board that is set in the form of an inverted U-shape and a plurality of light emitting diode (LED) lights mounted to and electrically connected with the metal core printed circuit board, the metal core printed circuit board being mounted to the backplane so as to mount the light bar to the backplane;
 wherein the metal core printed circuit board comprises first and second sidewalls that are arranged to oppose each other and a third sidewall connected between the first and second sidewalls, the first sidewall and the second sidewall being arranged parallel to each other, the third sidewall being perpendicularly connected to the first and second sidewalls, the first, second, and third sidewalls surrounding and delimiting a U-shaped channel, the LED lights being mounted to and electrically connected to an outer surface of the first sidewall of the metal core printed circuit board; 
 wherein the graphite pad is attached to an inner surface of the first sidewall of the metal core printed circuit board; 
 wherein the backplane comprises a bottom board and a side board connected to the bottom board, the side board and the bottom board defining a receiving space; 
 wherein the metal core printed circuit board is fit over and retained by the side board of the backplane with the U-shaped channel thereof; 
 wherein the backlight module further comprises a reflector plate received in the receiving space, a light guide plate mounted on the reflector plate, and an optic component arranged on the light guide plate, the reflector plate being arranged on the bottom board of the backplane; 
 wherein the mold frame forms a receiving section corresponding to the liquid crystal display panel, the liquid crystal display panel being received in the receiving section; 
 wherein the liquid crystal display panel comprises a thin film transistor (TFT) substrate, and color filter (CF) substrate laminated to the TFT substrate, liquid crystal interposed between the TFT substrate and the CF substrate, a first polarizer laminated to a surface of the TFT substrate away from the CF substrate, and a second polarizer laminated to a surface of the CF substrate away from the TFT substrate; and 
 wherein the liquid crystal display panel further comprises a sealant resin frame arranged along circumferential edges of the CF substrate and spacers arranged inboard the sealant resin frame.